I went to Slimbridge yesterday for a nice day out.http://www.wwt.org.uk/wetland-centres/slimbridge/https://goo.gl/maps/lGpja
Really nicely laid out place. It was £14 to get in but they had ramps and tarmac paths in most places for buggies and wheelchairs and you could hire those motorised scooters.
Thousands of ducks and swans but they had various other stuff too. They're all so comfortable with people being there you're almost stepping over ducks on the paths. They had otters too but they were behind glass and hard to photograph. Flamingos look nice from a distance but up close they're damn ugly and stink to high heaven!
They have excellent hides looking out over the fields and wetlands but the nature is quite a long way away from you. I had two sessions in the kingfisher hide but no sign of them. I think I'll have to go back again next year when they're feeding their young.
More pics herehttp://imgur.com/a/Od6eA#0